skb_reset_mac_header(skb);
eh = eth_hdr(skb);
- if (likely(ntohs(eh->h_proto) >= 1536))
+ if (likely(ntohs(eh->h_proto) >= ETH_P_802_3_MIN))
skb->protocol = eh->h_proto;
else
skb->protocol = htons(ETH_P_802_2);
iph->ttl = OVS_CB(skb)->tun_key->ipv4_ttl;
iph->frag_off = OVS_CB(skb)->tun_key->tun_flags &
OVS_TNL_F_DONT_FRAGMENT ? htons(IP_DF) : 0;
- ip_select_ident(iph, &rt_dst(rt), NULL);
+ /*
+ * Allow our local IP stack to fragment the outer packet even
+ * if the DF bit is set as a last resort. We also need to
+ * force selection of an IP ID here with __ip_select_ident(),
+ * as ip_select_ident() assumes a proper ID is not needed when
+ * when the DF bit is set.
+ */
+ skb->local_df = 1;
+ __ip_select_ident(iph, skb_dst(skb), 0);
memset(IPCB(skb), 0, sizeof(*IPCB(skb)));